Study of Sorption Capacity and Surface Morphology of Carbon Nanomaterials/Chitosan Based Aerogels

Authors

  • F. S. Sultanov Institute of Combustion Problems, Bogenbai Batyr st., 172, Almaty, Kazakhstan; al-Farabi Kazakh National University, al-Farabi av. 71, Almaty, Kazakhstan
  • Z. A. Mansurov Institute of Combustion Problems, Bogenbai Batyr st., 172, Almaty, Kazakhstan; al-Farabi Kazakh National University, al-Farabi av. 71, Almaty, Kazakhstan
  • Ch. Daulbayev Institute of Combustion Problems, Bogenbai Batyr st., 172, Almaty, Kazakhstan; al-Farabi Kazakh National University, al-Farabi av. 71, Almaty, Kazakhstan
  • A. A. Urazgaliyeva Institute of Combustion Problems, Bogenbai Batyr st., 172, Almaty, Kazakhstan; al-Farabi Kazakh National University, al-Farabi av. 71, Almaty, Kazakhstan
  • B. Bakbolat Institute of Combustion Problems, Bogenbai Batyr st., 172, Almaty, Kazakhstan; al-Farabi Kazakh National University, al-Farabi av. 71, Almaty, Kazakhstan
  • S. S. Pei University of Houston, Center for Advanced Materials, Houston, TX 77204-5004, USA

DOI:

https://doi.org/10.18321/ectj388

Abstract

In this research aerogels were synthesized by homogenization of carbon nanotubes and chitosan under ultrasonic treatment and active magnetic stirring, followed by freeze-drying in order to remove the liquid from its structure. Freeze-drying is characterized by a certain ratio of pressure and temperature at which the solid phase, in our case – the ice, turns into a gas without passing through a liquid phase. Freezedrying
was carried out at a temperature of –15 °C and a pressure of 30–40 Pa. After freeze-drying which lasted for 20 h, the as-obtained aerogels were carbonized at temperature of 800 °C in an inert atmosphere. Surface morphology of resulting aerogels was studied using scanning electron microscopy. The hydrophobicity and
sorption capacity of these aerogels to organic liquids characterized by different densities were investigated. In addition, composite aerogels with the presence of graphene nano-platelets in the structure were obtained and the influence of introduction of graphene nanoplatelets on aerogel’s properties was analyzed. It
was found that composite aerogels based on graphene and carbon nanotubes with chitosan as a glue matrix are characterized by a better-developed porosity of surface with a smaller pore sizes, and their sorption capacity for organic liquids is higher compared with the aerogels based on carbon nanotubes.

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Published

2016-01-20

How to Cite

Sultanov, F. S., Mansurov, Z. A., Daulbayev, C., Urazgaliyeva, A. A., Bakbolat, B., & Pei, S. S. (2016). Study of Sorption Capacity and Surface Morphology of Carbon Nanomaterials/Chitosan Based Aerogels. Eurasian Chemico-Technological Journal, 18(1), 19–24. https://doi.org/10.18321/ectj388

Issue

Vol. 18 No. 1 (2016)

Section

Articles

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